Hummel, J. J. (John James), d. 1902 · London : Cassell · leaf 147
itcan be readilyneutralised be-fore use. 87. Porter-Clark Process.—The essentialimprovementeffected by thisprocess is asaving of space,time, and la-bour, through the application of machinery to the ordi-nary Clarks process. Figs. 40 and 41 give plan and elevation of an arrange-ment for supplying… … Fis 41.—Pcrter-Clarks Apparatus for SofteningWater (elevation). 134 DYEING OP TEXTILE FABRICS. [Chap. IX. cvlinder A, by constantly chuming up slaked lime withwat^r admitted under pressure direct from the reservoiror main. By a pipe midway in the height of the chum,the more or less saturated…
Dyes and dyeing
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